John Williams spells out Sylvester Turner's problems going into the Mayor's race. I've made the same observations (here and here), but Williams adds an interesting Killer D twist that I'd forgotten:

Turner said he understood why the Killer D's acted but declined to participate because he was one of the five House conferees trying to reach a compromise with the Senate on a new state budget.

Politically, Turner acknowledged he was in a no-win situation that would leave one side or the other unhappy.

He's right. Had he joined the Democrats in Ardmore, Turner's opponents in the mayor's race could label him a quitter for leaving work in Austin.

Such criticism, however, probably wouldn't come from the man many believe Turner will face in a runoff -- former Councilman Orlando Sanchez, who forced Brown into a runoff in 2001.

In 1999, Sanchez and four other council members temporarily blocked a vote for an airport parking contract by walking out and breaking a quorum.

I believe Turner's stock is falling, and I believe it won't get back up. I'd love to see some reliable poll numbers right about now.